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Patented Ian. 3, I899.

A. & E. was cmassonmfinas.

MACHINE FOR KNEADING SOAP.

(Application filed Aug. 16, 1898.)

2 Sheets-Sheet I.

(No Model.)

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No. 6l7,282. Patented Jan. 3, I899.

A. & E. DES cmzssoumnss.

MACHINE FOB KNEADING SOAP. (Application filed Aug. 16, 1898.) (No Model.) 2 Sheets-Sheet 2.

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ANATOLE DES ORESSONNIERES AND ERNEST DES CRESSONNlllR-ES, OF BRUSSELS, BELGIUM.

MACHINE FOR KNEADING SOAP.

SPECIFICATION forming part of Letters Patent No; 617,282, dated January 3, 1899.

Application filed August 16, 1898. Serial Nor 689,069- (No model.)

132,688; in Germany February 26, 1898; in

England February 26, 1898; in France February25, 1898; in Sweden March 2, 1898; in Hungary March 10, 1898, and in Austria March 15, 1898,) of which the following is a full, clear, and exact description.

The device for automatically feeding machines for kneading or compressing soap and the like plastic substances which forms the object of the present application is a notable simplification of the arrangement described in another application for Letters Patent filed July 7, 1896, Serial No. 598,326, which allows the crusher therein described to be dispensed with and replaced by a single feed-roller, which modification has the further advantage of being applicable to all existing machines of this kind, as well as to new machines.

In the previous patent referred to it was explained that the machine was fed by the crusher with a view to causing the material to fall in a disintegrated condition between the spirals of the helix for the purpose of preventing it caking and doing away with hand-labor for feeding it therein. For this object a corrugated knife or scraper removed the material in shavings from the last cylinder of the crusher and it fell between the spirals of the helix, which carried it below the knife and toward the matrix. Nevertheless it was unavoidable by reason of the shapeand arrangement of the said knife that the quantity of material discharged from the last cylinder corresponded exactly to the quantity carried away by the matrix, as with out this condition the free space between the knife and the perimeter of the helix would become filled with soap more or less caked and compressed, which would finally form a spiral or helix of soap which would constantly fill the helix and prevent it conveying the fresh material fed in, so that the yield was limited to the maximum quantity of movable soap that the helix could convey.

According to the present invention, however, this maximum yield is considerably increased byan improved arrangement of feed whereby the quantity of soap conveyed is compacted or compressed into the helix under the action of a knife, as may be seen by reference to the accompanying drawings, in which- Figure 1 is an end view, partially in section, and Fig. 2 a longitudinal section, of the knead'er or compressor with automatic feed.

The vacant space between the knife R, the perimeter of the helix S, and the part of the cylinder T containing the helix is entirely avoided by reason of the circular form of the knife, which instead of being fixed on. a lateral extension, of the wall of the cylinder is fixed on a flange B, running from the edge of the cut-away wall of the cylinder T along the whole length of the knife, which latter thus continues the wall of the cylinder in conformity with the perimeter of the helix up to a point below the tangential line of the single feed-roller O, which has the same diameter as the helix S and the perimeter of which is tangential with the helix by reason of its trunnions being mounted in brackets K, projecting from the cylinder T, which is open above and surmounted by a hopper E. Further, the helix S and the roller 0 have the same speed of rotation, which is transmitted to them by suitable driving-gear H in such a way as to cause them to revolve in opposite directions.

The workin g will be easily understood from the foregoing.

The material to be kneaded or condensed into a roll or extruded column is conveyed promiscuously into the hopper E and falls directly onto the helix S, which tends to carry it toward the roller 0, which latter, revolving in an opposite direction, compresses it and piles it between the spirals of the helix, the interstices of which thus convey the maximum of material which passes in front of the internal smooth face of the curved knife R, the full cutting edge of which latter scrapes off the soap adhering to the roller in such a way that said roller always acts in a clean or bare condition on the fresh material which is introduced into the hopper and constantly drawn between the spirals of the helix by the cooperation of the helix with the feedroller, which thus plays the part of the human hand formerly necessary in this dangerous operation. This simple arrangement for automatically feeding machines for kneading or compressing soap and the like into a roll or extruded column is only possible for such a sticky substance as soap on condition that the cylinder has no extravasations for the reasons hereinbefore explained, and therefore the cut-away wall of the cylinder oppo- 

